package jdbc;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;


public class LoginDemo {
    public static void main(String[] args) {
        UserInfo userInfo = InputUtil.getInputObject(new UserInfo(), "欢迎登录", "登录");
        try (
                Connection connection = DBUtil.getConnection()
        ) {
            Statement statement = connection.createStatement();
            String sql = "SELECT id,username,password,nickname,age " +
                    "FROM userinfo " +
                    "WHERE username='" + userInfo.getUsername() + "'AND password='" + userInfo.getPassword() + "'";
            ResultSet rs = statement.executeQuery(sql);
            if (rs.next()) {
                System.out.println("登录成功,欢迎你:" + rs.getString("nickname"));
            } else {
                System.out.println("登录失败，用户名或密码不正确");
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}
